Builder Sites Bidcom, Cephren,
Merge in Wave of Consolidation

Bidcom Inc. and Cephren Inc., two of the biggest Internet companies targeted at the construction industry, are merging in the latest sign of consolidation among e-commerce start-up businesses.

The combined company will be called Citadon, and will be a one-stop resource for builders, architects and contractors working on projects. Bidcom (www.bidcom.com ) and Cephren (www.cephren.com ), which are both closely held, plan to announce the...